Re: CxF format

4 May 2020

      Hello Mr. Breton,

If you were to look near the end of the ColorChecker.cxf file provided by X-Rite, you would find the MeasurementSpec block of XML (highlighted in blue below). Inside this block is the DeviceIllumination (highlighted in red below), which is what you are looking for.

		<ColorSpecificationCollection>
			<ColorSpecification Id="CSD50-2">
				<TristimulusSpec>
					<Illuminant>D50</Illuminant>
					<Observer>2_Degree</Observer>
					<Method>E308_Table5</Method>
				</TristimulusSpec>
				<MeasurementSpec>
					<MeasurementType>Colorimetric_Reflectance</MeasurementType>
					<GeometryChoice>
						<SingleAngle>
							<SingleAngleConfiguration>Annular</SingleAngleConfiguration>
							<IlluminationAngle>45.0</IlluminationAngle>
							<MeasurementAngle>0.0</MeasurementAngle>
						</SingleAngle>
					</GeometryChoice>
				</MeasurementSpec>
			</ColorSpecification>
			<ColorSpecification Id="CSD65-2">
				<TristimulusSpec>
					<Illuminant>D65</Illuminant>
					<Observer>10_Degree</Observer>
					<Method>E308_Table6</Method>
				</TristimulusSpec>
				<MeasurementSpec>
					<MeasurementType>Spectrum_Reflectance</MeasurementType>
					<GeometryChoice>
						<SingleAngle>
							<SingleAngleConfiguration>Annular</SingleAngleConfiguration>
							<IlluminationAngle>45.0</IlluminationAngle>
							<MeasurementAngle>0.0</MeasurementAngle>
						</SingleAngle>
					</GeometryChoice>
					<WavelengthRange StartWL="400" Increment="10"/>
					<CalibrationStandard>Ceramic</CalibrationStandard>
					<Device>
						<Manufacturer>XRite</Manufacturer>
						<Model>XR962</Model>
						<SerialNumber/>
						<DeviceClass>DeviceClass_Spot</DeviceClass>
						<DeviceFilter>Filter_None</DeviceFilter>
						<DeviceIllumination>M0_Incandescent</DeviceIllumination>
						<DevicePolarization>false</DevicePolarization>
					</Device>
				</MeasurementSpec>
			</ColorSpecification>
		</ColorSpecificationCollection>

Regards,

Robin Myers